US2156285A - Wrench - Google Patents

Wrench Download PDF

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Publication number
US2156285A
US2156285A US156993A US15699337A US2156285A US 2156285 A US2156285 A US 2156285A US 156993 A US156993 A US 156993A US 15699337 A US15699337 A US 15699337A US 2156285 A US2156285 A US 2156285A
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US
United States
Prior art keywords
wrench
rod
handle
pivot pin
extension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US156993A
Inventor
Clarence E Harris
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Publication date
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Priority to US156993A priority Critical patent/US2156285A/en
Application granted granted Critical
Publication of US2156285A publication Critical patent/US2156285A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/481—Spanners; Wrenches for special purposes for operating in areas having limited access

Definitions

  • the subject of this invention is a wrench.
  • the purpose of the invention is to provide a wrench for a special situation in which there is not sufiicient space to apply a large force to turn the wrench.
  • the invention consists in providing a wrench with a pivotally mounted extension having a plurality of selectively engageable members on which to apply the force of a lever.
  • Fig. 1 is a view of a structure having a limited space and showing the employment of the wrench forming the subject of the invention.
  • Fig. 2 is a detail view in side elevation of the 20 wrench.
  • Fig. 3 is a view in end elevation.
  • Fig. 4 is a view of a chain-type extension.
  • FIG. 1 there is shown a structure which is part of the recuperator mechanism of a 25 gun and which includes a member 5 which is to be secured by a plurality of nuts or bolts 6 of some of which are so located that the space for operation of a wrench l is exceedingly restricted.
  • the wrench is provided with an extension, which, in the form shown in Figs. 1 to 3, consists of a rigid bar 8 which is connected to the handle of the wrench by means of a pivot pin 9.
  • the greater portion of the bar 5 is in the shape of a ladder, the openings I0 providing for passage of a rod 1 I and the crosspieces 12 adapted to be engaged by the rod.
  • the rod is used as a lever, with one end. engaging one of the bolts 6 which serves as a fulcrum, and in this 10 manner a considerable force may be exerted on the crosspieces I2 to eifect turning of the Wrench.
  • the extension is a flexible member such as a chain l3 of open links which are straddled by the bifurcated 15 end of a rod 14 and which supply the surface on which the rod may act.
  • a wrench including a handle with a work-engaging end, a pivot pin in the end of the handle 0 opposite to the work-engaging end, and a rigid member mounted on the pivot pin, said member having a plurality of openings and crosspieces for application of a lever and arranged parallel to the axis of the pivot pin and remote from the 25 work-engaging end of the handle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

C. E. HARRIS May 2, 1939.
WRENCH Filed Aug. 2, 1957 ITLVETL t E11" Clarence E-HE1"1"1E At t1: r'n E Patented May 2, 1939 UNITED STATES PATENT OFFICE WRENCH 1 Claim.
(Granted under the act of March 3, 1883, as
amended April 30, 1928; 370 0. G. 757) The invention described herein may be manufactured and used by or for the Government for govermnental purposes, without the payment to me of any royalty thereon.
The subject of this invention is a wrench.
The purpose of the invention is to provide a wrench for a special situation in which there is not sufiicient space to apply a large force to turn the wrench.
10 The invention consists in providing a wrench with a pivotally mounted extension having a plurality of selectively engageable members on which to apply the force of a lever.
Several embodiments of the invention are illus- 15 trated in the accompanying drawing in which:
Fig. 1 is a view of a structure having a limited space and showing the employment of the wrench forming the subject of the invention.
Fig. 2 is a detail view in side elevation of the 20 wrench.
Fig. 3 is a view in end elevation.
Fig. 4 is a view of a chain-type extension.
Referring to Fig. 1 there is shown a structure which is part of the recuperator mechanism of a 25 gun and which includes a member 5 which is to be secured by a plurality of nuts or bolts 6 of some of which are so located that the space for operation of a wrench l is exceedingly restricted.
According to thisinvention, the wrench is provided with an extension, which, in the form shown in Figs. 1 to 3, consists of a rigid bar 8 which is connected to the handle of the wrench by means of a pivot pin 9. The greater portion of the bar 5 is in the shape of a ladder, the openings I0 providing for passage of a rod 1 I and the crosspieces 12 adapted to be engaged by the rod. The rod is used as a lever, with one end. engaging one of the bolts 6 which serves as a fulcrum, and in this 10 manner a considerable force may be exerted on the crosspieces I2 to eifect turning of the Wrench.
In the modification shown in Fig. 4 the extension is a flexible member such as a chain l3 of open links which are straddled by the bifurcated 15 end of a rod 14 and which supply the surface on which the rod may act.
I claim:
A wrench including a handle with a work-engaging end, a pivot pin in the end of the handle 0 opposite to the work-engaging end, and a rigid member mounted on the pivot pin, said member having a plurality of openings and crosspieces for application of a lever and arranged parallel to the axis of the pivot pin and remote from the 25 work-engaging end of the handle.
CLARENCE E. HARRIS.
US156993A 1937-08-02 1937-08-02 Wrench Expired - Lifetime US2156285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US156993A US2156285A (en) 1937-08-02 1937-08-02 Wrench

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US156993A US2156285A (en) 1937-08-02 1937-08-02 Wrench

Publications (1)

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US2156285A true US2156285A (en) 1939-05-02

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Family Applications (1)

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US156993A Expired - Lifetime US2156285A (en) 1937-08-02 1937-08-02 Wrench

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426763A (en) * 1943-10-06 1947-09-02 Earl M Curtis Curved handle wrench for relatively inaccessible threaded objects
US2725773A (en) * 1954-09-27 1955-12-06 Boeing Co Arcuate wrench-shank slidably engaged by chordal extensionhandle
US4104936A (en) * 1975-10-31 1978-08-08 Sjostrom Otto Einar Holding-on device
US5960684A (en) * 1997-12-12 1999-10-05 Chrysler Corporation Tool for hard to reach fasteners
US20060156871A1 (en) * 2005-01-17 2006-07-20 Pi-Liang Wu Wrench with two pivotable sections

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426763A (en) * 1943-10-06 1947-09-02 Earl M Curtis Curved handle wrench for relatively inaccessible threaded objects
US2725773A (en) * 1954-09-27 1955-12-06 Boeing Co Arcuate wrench-shank slidably engaged by chordal extensionhandle
US4104936A (en) * 1975-10-31 1978-08-08 Sjostrom Otto Einar Holding-on device
US5960684A (en) * 1997-12-12 1999-10-05 Chrysler Corporation Tool for hard to reach fasteners
US20060156871A1 (en) * 2005-01-17 2006-07-20 Pi-Liang Wu Wrench with two pivotable sections
US7204176B2 (en) * 2005-01-17 2007-04-17 Yu Feng Industrial Co., Ltd. Wrench with two pivotable sections

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